@book{25431,
	author = {Spiegel, Murray R. and Stephens, Larry J.},
	title = {Estadística /},
	publisher = {McGraw-Hill/Interamericana,},
	year = {2002.},
	address = {México :},
	edition = {3a. ed.},
	note = {Versión original en inglés: Schaum's outline of statistics.}
}